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Don't Let Algae Invade and Destroy your Roof!Article Summary: Is the roof of your home discolored and maybe even damaged by algae growth and you are unsure how to handle this problem? Read this article [link widoczny dla zalogowanych] to learn specific information about this plant-like organism and how you can prevent it from invading and destroying your roof!
**NOTE** - has claimed original rights [link widoczny dla zalogowanych] on the article "Don't Let Algae Invade and Destroy your Roof!" ... if there is a dispute on the originality of this article ... please contact us via our and supply our staff with the appropriate details of dispute (ie ).
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C. Michael Hunter is an expert in residential and commercial roofing. To find out more about College Station Roofers, go to the main website at:
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An algae infestation is a common problem to those homeowners who live in a humid area and have asphalt shingle roofing; however, this growth can also grow on tile and on wood shakes. Regardless of the type of material installed on the housetop, algae will jeopardize the integrity of the roofing system.
There are several different opinions regarding the removal of algae. According to some contractors, such type of removal can cause a deterioration of materials resulting in a loss of function. This opinion is not completely accurate because asphalt shingles can be cleaned without damaging the roof.
The Culprit
'Gloeocapsa magma' is the technical term for algae that is responsible for black stains and streaks. This growth is a primary problem with asphalt shingles. These plant-like organisms accumulate, grow [link widoczny dla zalogowanych] and feed on moisture and calcium carbonate from fiberglass shingles. Basically, they spread rapidly because the spores are easily blown off by the wind as well as a result of rising humidity.
Furthermore, when the older of these complex-celled organisms decompose, they harbor [link widoczny dla zalogowanych] moisture and allow the bacteria to multiply. Infestation of algae, if left untreated, will create rotting, loss of granules and premature break-down of the roof. Considering that the spores are blown by the [link widoczny dla zalogowanych] wind, it is essential to take preventive measures and perform an annual inspection to avoid the colony from re-growing.
The Solution
The good thing about algae is that it can [link widoczny dla zalogowanych] be cleaned using different methods. The following should be done to address this [link widoczny dla zalogowanych] unwanted formation:
Low-Pressure Washing - The [link widoczny dla zalogowanych] power of high-pressure is good but it has been discouraged because it can damage the integrity of the roofing material. The National Roofing Contractors Association (NRCA) and Asphalt [link widoczny dla zalogowanych] Roofing Manufacturers Association (ARMA) state that high-pressure washing should not be used to remove algae because the granules that protect the shingles from ultraviolet rays will be jeopardized. Consequently, low-pressure [link widoczny dla zalogowanych] washing is an acceptable solution to avoid damaging the shingles.
Chlorine Bleach Solution - The cheapest cleaning method is the application of chlorine bleach solution to the shingles. A homeowner can DIY this plan. Mix about 13 ounces of chlorine bleach to a gallon of water and spray gently using a garden sprayer on the affected areas. After spraying, let it sit for five minutes then rinse it off to avoid further damage. This is only effective if it is applied to a dry roof. The negative effect of using this solution is that it can decrease the elasticity of the shingles resulting in rigidity, brittleness and curling. In addition, a chlorine bleach application is hazardous to the environment, so vegetation on the ground must be covered with plastic.
Oxygen Bleach Solution - Oxygenated bleach powder is non-toxic and the stain removal capabilities can be activated by mixing it with water. The mixture [link widoczny dla zalogowanych] can be soaked longer than chlorine bleach; the solution can sit for about 30 minutes and then be brushed in a downward motion to remove the algae. Always make sure to wear personal protective equipment during the cleaning procedure because any roof [link widoczny dla zalogowanych] is slippery when wet.
Introducing Copper - These complex-celled organisms do not like metal. To prevent [link widoczny dla zalogowanych] it from growing, a homeowner can cut 5 or 6 inch wide strips of copper or zinc and place them under the ridge of the roof. When it rains, copper carbonate will be washed down preventing the algae from growing.
This growth can cause dark streaks on any housetop material. Those [link widoczny dla zalogowanych] who live in areas with high humidity are vulnerable to this manifestation. The best way to effectively remove an algae infestation is by utilizing different cleaning methods, always being cautious when cleaning as it may destroy the integrity of the roofing material. Copper and zinc offer a sensible solution to combating this colonization but will add to expenses. When deciding what to do for algae growth, always remember that it can be cleaned by using different solutions - or call the nearest roofing contractor to do the job. Don't let algae invade and destroy any roof!
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